Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751142AbVJFQrN (ORCPT ); Thu, 6 Oct 2005 12:47:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751145AbVJFQrN (ORCPT ); Thu, 6 Oct 2005 12:47:13 -0400 Received: from xproxy.gmail.com ([66.249.82.193]:31201 "EHLO xproxy.gmail.com") by vger.kernel.org with ESMTP id S1751142AbVJFQrL convert rfc822-to-8bit (ORCPT ); Thu, 6 Oct 2005 12:47:11 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=AQie2BUiWDTSvnhpmTHETY5s36SgJhMJ2v0oOXARmqsTH0hPdhzzytor30FwxQIFtnMnSJ6L+6XDX4a9geNnulYSS1aNGqmU01ZINQDm0elX7emapMxr24NWgtsz1XlHSvRgYoA5KJtLXwszp5iMl0nZ8qMTBAm17D4v+NOKlLg= Message-ID: <1c190f10510060947s5e6099d4pe9bed56e360551f4@mail.gmail.com> Date: Thu, 6 Oct 2005 09:47:11 -0700 From: Todd Kneisel Reply-To: Todd Kneisel To: Ingo Molnar Subject: Re: 2.6.14-rc3-rt2 Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , david singleton , Todd.Kneisel@bull.com, Felix Oxley In-Reply-To: <20051004084405.GA24296@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Content-Disposition: inline References: <20051004084405.GA24296@elte.hu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1505 Lines: 33 On 10/4/05, Ingo Molnar wrote: > > i have released the 2.6.14-rc3-rt2 tree, which can be downloaded from > the usual place: > > http://redhat.com/~mingo/realtime-preempt/ > > the biggest change in this release is the long-anticipated merge of a > streamlined version of the "robust futexes/mutexes with priority > queueing and priority inheritance" code into the -rt tree. The original > upstream patch is from Todd Kneisel, with further improvements, cleanups > and -RT integration done by David Singleton. > My original patch implemented robust futexes using the existing futex wait queue mechanisms, because the project I'm working on does not need priority inheritance or other realtime features. David's changes replaced the wait queue mechanisms with rt_mutexes. I'm working on a patch to add my implementation back in, so the kernel will support both robust wait-queue futexes and robust rt_mutex futexes. Does anyone else see the need for this? Also, my patch implemented only shared robust futexes. David's work was based on mine, so the current code only supports shared robust futexes that may or may not be priority inheritance. It doesn't support priority inheritance mutexes that are not robust, or that are not shared. Todd. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/